vendor/symfony/intl/Symfony/Component/Intl/DateFormatter/DateFormat/MonthTransformer.php

   1 <?php
   2
   3 /*
   4  * This file is part of the Symfony package.
   5  *
   6  * (c) Fabien Potencier <fabien@symfony.com>
   7  *
   8  * For the full copyright and license information, please view the LICENSE
   9  * file that was distributed with this source code.
  10  */
  11
  12 namespace Symfony\Component\Intl\DateFormatter\DateFormat;
  13
  14 /**
  15  * Parser and formatter for month format
  16  *
  17  * @author Igor Wiedler <igor@wiedler.ch>
  18  */
  19 class MonthTransformer extends Transformer
  20 {
  21     /**
  22      * @var array
  23      */
  24     protected static $months = array(
  25         'January',
  26         'February',
  27         'March',
  28         'April',
  29         'May',
  30         'June',
  31         'July',
  32         'August',
  33         'September',
  34         'October',
  35         'November',
  36         'December'
  37     );
  38
  39     /**
  40      * Short months names (first 3 letters)
  41      * @var array
  42      */
  43     protected static $shortMonths = array();
  44
  45     /**
  46      * Flipped $months array, $name => $index
  47      * @var array
  48      */
  49     protected static $flippedMonths = array();
  50
  51     /**
  52      * Flipped $shortMonths array, $name => $index
  53      * @var array
  54      */
  55     protected static $flippedShortMonths = array();
  56
  57     /**
  58      * Constructor
  59      */
  60     public function __construct()
  61     {
  62         if (0 === count(self::$shortMonths)) {
  63             self::$shortMonths = array_map(function($month) {
  64                 return substr($month, 0, 3);
  65             }, self::$months);
  66
  67             self::$flippedMonths = array_flip(self::$months);
  68             self::$flippedShortMonths = array_flip(self::$shortMonths);
  69         }
  70     }
  71
  72     /**
  73      * {@inheritDoc}
  74      */
  75     public function format(\DateTime $dateTime, $length)
  76     {
  77         $matchLengthMap = array(
  78             1 => 'n',
  79             2 => 'm',
  80             3 => 'M',
  81             4 => 'F',
  82         );
  83
  84         if (isset($matchLengthMap[$length])) {
  85             return $dateTime->format($matchLengthMap[$length]);
  86         }
  87
  88         if (5 === $length) {
  89             return substr($dateTime->format('M'), 0, 1);
  90         }
  91
  92         return $this->padLeft($dateTime->format('m'), $length);
  93     }
  94
  95     /**
  96      * {@inheritDoc}
  97      */
  98     public function getReverseMatchingRegExp($length)
  99     {
 100         switch ($length) {
 101             case 1:
 102                 $regExp = '\d{1,2}';
 103                 break;
 104             case 3:
 105                 $regExp = implode('|', self::$shortMonths);
 106                 break;
 107             case 4:
 108                 $regExp = implode('|', self::$months);
 109                 break;
 110             case 5:
 111                 $regExp = '[JFMASOND]';
 112                 break;
 113             default:
 114                 $regExp = '\d{'.$length.'}';
 115                 break;
 116         }
 117
 118         return $regExp;
 119     }
 120
 121     /**
 122      * {@inheritDoc}
 123      */
 124     public function extractDateOptions($matched, $length)
 125     {
 126         if (!is_numeric($matched)) {
 127             if (3 === $length) {
 128                 $matched = self::$flippedShortMonths[$matched] + 1;
 129             } elseif (4 === $length) {
 130                 $matched = self::$flippedMonths[$matched] + 1;
 131             } elseif (5 === $length) {
 132                 // IntlDateFormatter::parse() always returns false for MMMMM or LLLLL
 133                 $matched = false;
 134             }
 135         } else {
 136             $matched = (int) $matched;
 137         }
 138
 139         return array(
 140             'month' => $matched,
 141         );
 142     }
 143 }